Add this to the navigation menu (after Channels/Agents link):

<!-- Call Center -->
@can('viewAny', App\Models\BookingChannel::class)
<x-nav-link :href="route('call-center.index')" :active="request()->routeIs('call-center.*')">
    <i class="fas fa-headset mr-2"></i>
    {{ __('Call Center') }}
</x-nav-link>
@endcan